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December 2020 Weather Observations for the PNW


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First snow of the year! Melting quick but at least a little left. Was down south picking up a new family member. 

Beautiful morning in the Blue Mountains of eastern Oregon. It was 12F when I took these pics around 8:30am. Gotta get our winter fix somehow.

Major shift on the 12z EPS to lower heights over the West with rising heights in the SE compared to the 00z last night. Looking like a really fun mid month on through the Holidays. Perfect timing IMO!

Posted Images

4 minutes ago, ShawniganLake said:

Some of the wettest snow you’ll see accumulate to that depth. Lots of tree damage and power outages 

I believe it! There was about ¼ as much as that at Lake Terrell yesterday afternoon, and tree limbs were starting to break. It was one of the things that persuaded me to end my walk and return home.

It's called clown range for a reason.

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Definitely not a warm pattern over the next week.

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Snowfall                                  Precip

2020-21: 0.5"                        2020-21: 27.38"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

 

It's always sunny at Winters Hill! 

 

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14 minutes ago, TT-SEA said:

As promised... here is the "after" pic.    30 degrees colder than when the picture from yesterday was taken.

 

132418177_3630210057047176_5240593225558853050_o.jpg

Pretty incredible change in the weather in just a few hours. 

Cold season stats  

Coldest low-28

Coldest high-38

Freezes-7

Monthly rainfall-8.77”

Cold season rainfall-25.80”

Snowfall-Tr.

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1 hour ago, TT-SEA said:

Temp went up overnight... even out here.    I was up at 2 a.m. and it was 38 and I checked the observations and most places were in the upper 30s.   I could hear water coming off the roof as the snow was melting.    Very disappointing.   

I didn't think it would clear out and freeze hard... but it usually does not warm up here overnight after a snowfall unless its a transition event.

Hmm...... I think it was Kayla and I that told you that would happen. 

 

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Just now, BLI snowman said:

Hmm...... I think it was Kayla and I that told you that would happen. 

 

Sort of... I think she said my snow would be gone by morning.    It was in between our predictions.

**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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Looks like north of Everett and the foothills were the big winners...still quite a few people saw accumulating snowfall from Everett to Tacoma. 

Cold season stats  

Coldest low-28

Coldest high-38

Freezes-7

Monthly rainfall-8.77”

Cold season rainfall-25.80”

Snowfall-Tr.

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4 minutes ago, DJ Droppin said:

Day 7 Garbage runs continue

500h_anom.na.png

 

Looks like a much drier period coming up... which makes sense after the recent wet period.

Phil mentioned a jet extension in early January.   So another wet period and then... maybe then... the stage will be set for some real fun.   I think we are probably still a month away.     

**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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1 minute ago, TT-SEA said:

 

Looks like a much drier period coming up... which makes sense after the recent wet period.

Phil mentioned a jet extension in early January.   So another wet period and then... maybe then... the stage will be set for some real fun.   I think we are probably still a month away.     

Mid-late January into early Feb wouldn't be too bad for an Arctic outbreak. 

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Just now, jakerepp said:

Mid-late January into early Feb wouldn't be too bad for an Arctic outbreak. 

1989 is calling.

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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1 hour ago, TT-SEA said:

Temp went up overnight... even out here.    I was up at 2 a.m. and it was 38 and I checked the observations and most places were in the upper 30s.   I could hear water coming off the roof as the snow was melting.    Very disappointing.   

I didn't think it would clear out and freeze hard... but it usually does not warm up here overnight after a snowfall unless its a transition event.

I dislike it when that happens, but it’s par for the course in marginal events like this. Would have happened here if it did not clear off. As it is, there was some compaction and melting before it cleared.

Such a difference from my teen years in the Rockies, where it would always freeze overnight in the winter months, except if there was a mild, rainy system moving through. And even on most of those, there would usually be a pause in the action and a brief clearing spell where it would touch freezing at some point overnight.

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It's called clown range for a reason.

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45 minutes ago, DJ Droppin said:

Day 7 Garbage runs continue

500h_anom.na.png

Yup, the Willamette Valley is still yet to see anything favorable on the models. Haven't even had much clown range eye candy. Just...nothing. 

Looks like we got down to 36F. Was still 40F when I went to bed. Up to 38F now so at least it feels more like the cold weather season.

Springfield, Oregon cold season 20-21 Stats:

  • Coldest high: 38F (Nov 21)
  • Coldest low: 23F (Oct 26)
  • Days with below freezing temps: 30 (Most recent: Jan 24, 2021)
  • Days with sub-40F highs: 3 (Most recent: Dec 24)
  • Total snowfall: 0.0"
  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 20.7"

GoFundMe: www.gofundme.com/CollegeBasketballvsEpilepsy

My Twitter @357jerseys4hope

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Yesterday was rather impressive down here too.  We didn't go from 60 to snow, but 60 to the low 40s.  I was really hoping the front would come through midday, always more dramatic to watch the temperatures fall even during the heat of the day.  Oh well, even non-weather geeks were talking about how warm it was followed by the very gusty winds and heavy rain, plus it was very well forecast.

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2 hours ago, TT-SEA said:

Temp went up overnight... even out here.    I was up at 2 a.m. and it was 38 and I checked the observations and most places were in the upper 30s.   I could hear water coming off the roof as the snow was melting.    Very disappointing.   

I didn't think it would clear out and freeze hard... but it usually does not warm up here overnight after a snowfall unless its a transition event.

I've still got it!

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Cold Season 2020/21:

Total snowfall: 56.0"

Highest daily snowfall: 12.0"

Highest snow depth: 14.0"

Coldest high: 9.0º

Coldest low: -5.1º

Number of subzero days: 2

Personal Weather Station on Wunderground: 

https://www.wunderground.com/personal-weather-station/dashboard?ID=KMTBOZEM152#history

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On 12/21/2020 at 9:41 AM, Kayla said:

I'm going to go out on a limb to say that you'll likely see 2-4" tonight but by morning most of it will be gone.

 

1 hour ago, TT-SEA said:

Sort of... I think she said my snow would be gone by morning.    It was in between our predictions.

Nah it sounds and looks like I was spot on.

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Cold Season 2020/21:

Total snowfall: 56.0"

Highest daily snowfall: 12.0"

Highest snow depth: 14.0"

Coldest high: 9.0º

Coldest low: -5.1º

Number of subzero days: 2

Personal Weather Station on Wunderground: 

https://www.wunderground.com/personal-weather-station/dashboard?ID=KMTBOZEM152#history

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My before and after pics...Would have been more dramatic if we didn’t have the big meltdown overnight. And also the roads are still not perfect around here yet. But 3/4 of a mile away at the lower elevation at work it’s just water over the roadway. 

46C1AEEB-A640-426A-8866-BB8D69CF2B97.jpeg

ABEAB529-2025-4320-914E-2E48EBDAC029.jpeg

23E5E5FF-5E88-4376-AE80-5EE9B259A2CB.jpeg

5E510AD1-2677-4E72-86EA-1A335305E94C.jpeg

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4 minutes ago, BLI snowman said:

Not looking likely, maybe a brief window on Thursday.

Looks like 28 will stand as their low for 2020, so a new high water mark.

They have also hit 60+ every month of this year, which isn't unprecedented but is always kind of a mark of lameness. Especially coupled with such a mild annual low.

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2 minutes ago, Jesse said:

Looks like 28 will stand as their low for 2020, so a new high water mark.

They have also hit 60+ every month of this year, which isn't unprecedented but is always kind of a mark of lameness. Especially coupled with such a mild annual low.

That sucks. I'm sorry for y'all up there.

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Springfield, Oregon cold season 20-21 Stats:

  • Coldest high: 38F (Nov 21)
  • Coldest low: 23F (Oct 26)
  • Days with below freezing temps: 30 (Most recent: Jan 24, 2021)
  • Days with sub-40F highs: 3 (Most recent: Dec 24)
  • Total snowfall: 0.0"
  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 20.7"

GoFundMe: www.gofundme.com/CollegeBasketballvsEpilepsy

My Twitter @357jerseys4hope

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7 minutes ago, Jesse said:

Looks like 28 will stand as their low for 2020, so a new high water mark.

They have also hit 60+ every month of this year, which isn't unprecedented but is always kind of a mark of lameness. Especially coupled with such a mild annual low.

Also on track for their 3rd warmest December on record through today (1950, 1939). Might drop a few spots in the rankings but it's fair to say this month will go down as a torch.

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The 12z GFS was pure unadulterated garbage. Kind of expected. The 18z yesterday was kind of interesting, but had absolutely no ensemble support. 

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Snowfall                                  Precip

2020-21: 0.5"                        2020-21: 27.38"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

 

It's always sunny at Winters Hill! 

 

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1 minute ago, BLI snowman said:

Also on track for their 3rd warmest December on record through today (1950, 1939). Might drop a few spots in the rankings but it's fair to say this month will go down as a torch.

Would be nice if we could count on January to make up for it.

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Just now, SilverFallsAndrew said:

The 12z GFS was pure unadulterated garbage. Kind of expected. The 18z yesterday was kind of interesting, but had absolutely no ensemble support. 

It certainly wasn't a warm run Andfew.

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2 minutes ago, Jesse said:

It certainly wasn't a warm run Andfew.

It was still horrible Jefse.

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Snowfall                                  Precip

2020-21: 0.5"                        2020-21: 27.38"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

 

It's always sunny at Winters Hill! 

 

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